Senior Data Scientist, LLM Customization & Innovation

JobCubby; San Jose (CA); Hybrid; USD 148,000 - 169,000; Full time

Job summary

Capital One is seeking a Senior Associate, Data Scientist for the LLM Customization Team in San Jose to shape AI-powered customer experiences. You will collaborate with data scientists, software engineers, and product managers to adapt and fine-tune large language models for business-specific features.

You will guide model development from design through deployment in scalable systems. The ideal candidate brings hands-on experience with LLMs, open-source tools, and cloud platforms, plus a track

Qualifications

• Bachelor’s in quantitative field plus 2 years data analytics experience.
• Master’s in STEM or PhD in STEM preferred.
• Experience with AWS.
• 2+ years Python, Scala, or R; 2+ years ML; 2+ years SQL.

Responsibilities

• Partner with cross-functional teams to deliver AI-powered products.
• Leverage PyTorch, Hugging Face, LangChain to extract insights from large data volumes.
• Be the NLP expert to tune and adapt LLMs for business applications.
• Build NLP models from design to production, ensuring scalable, resilient systems.

Skills

Python

Scala

R

SQL

NLP

Machine Learning

AWS

Education

Bachelor's Degree in a quantitative field

Master's Degree in STEM or MBA with quantitative concentration

Tools

Pytorch

Hugging Face

LangChain

VectorDBs

AWS Ultraclusters

Job description

Capital One is seeking a Senior Associate, Data Scientist for the LLM Customization Team in San Jose to shape AI-powered customer experiences. You will collaborate with data scientists, software engineers, and product managers to adapt and fine-tune large language models for business-specific features.

You will guide model development from design through deployment in scalable systems. The ideal candidate brings hands-on experience with LLMs, open-source tools, and cloud platforms, plus a track